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BMW 3 Series E46 1998–2006 (M54) → DTAFast T12 (auto)

BMW 3 Series E46 1998–2006 (M54) — DTAFast — T12
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12

Before you start

Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors3: read the Findings page before cutting any wire
Size of the job71 wires · 12 connectors · 3 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Terminals3-1447221-4
Order of work1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up.

Build checklist

Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.

WireFromToGaugeColourCutLabelCrimp ACrimp BPin APin BContinuity
W1OEM-X60001-8SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-X60001-9SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1T12-C1-310.85☐☐☐☐☐☐☐
W4OEM-X60001-7T12-C3-260.85☐☐☐☐☐☐☐
W5OEM-X60001-4SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-X60001-5SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-X60001-6SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-X60005-5SP-GND-10.85☐☐☐☐☐☐☐
W9SP-GND-1T12-C1-130.85☐☐☐☐☐☐☐
W10SP-GND-1T12-C1-140.85☐☐☐☐☐☐☐
W11OEM-X60002-20SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-X60002-21SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-X60002-22SP-0V-10.5☐☐☐☐☐☐☐
W14OEM-X60002-24SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-X60003-15SP-0V-10.5☐☐☐☐☐☐☐
W16OEM-X60003-17SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-X60003-18SP-0V-10.5☐☐☐☐☐☐☐
W18OEM-X60003-20SP-0V-10.5☐☐☐☐☐☐☐
W19OEM-X60003-21SP-0V-10.5☐☐☐☐☐☐☐
W20OEM-X60003-23SP-0V-10.5☐☐☐☐☐☐☐
W21OEM-X60003-25SP-0V-10.5☐☐☐☐☐☐☐
W22OEM-X60003-28SP-0V-10.5☐☐☐☐☐☐☐
W23OEM-X60004-12SP-0V-10.5☐☐☐☐☐☐☐
W24OEM-X60004-7SP-0V-10.5☐☐☐☐☐☐☐
W25SP-0V-1T12-C2-210.5☐☐☐☐☐☐☐
W26SP-0V-1T12-C2-330.5☐☐☐☐☐☐☐
W27OEM-X60003-7SP-5V1-10.5☐☐☐☐☐☐☐
W28OEM-X60004-14SP-5V1-10.5☐☐☐☐☐☐☐
W29OEM-X60004-9SP-5V1-10.5☐☐☐☐☐☐☐
W30SP-5V1-1T12-C2-240.5☐☐☐☐☐☐☐
W31OEM-X60003-8T12-C2-120.5☐☐☐☐☐☐☐
W32OEM-X60003-2T12-C2-220.5☐☐☐☐☐☐☐
W33OEM-X60003-5T12-C2-290.5☐☐☐☐☐☐☐
W34OEM-X60003-29T12-C3-310.5☐☐☐☐☐☐☐
W35OEM-X60003-30T12-C3-320.5☐☐☐☐☐☐☐
W36OEM-X60005-3T12-C1-100.5☐☐☐☐☐☐☐
W37OEM-X60005-2T12-C1-180.5☐☐☐☐☐☐☐
W38OEM-X60005-1T12-C1-10.5☐☐☐☐☐☐☐
W39OEM-X60005-9T12-C1-260.5☐☐☐☐☐☐☐
W40OEM-X60005-8T12-C1-110.5☐☐☐☐☐☐☐
W41OEM-X60005-7T12-C1-270.5☐☐☐☐☐☐☐
W42OEM-X60003-33T12-C1-90.5☐☐☐☐☐☐☐
W43OEM-X60003-34T12-C1-170.5☐☐☐☐☐☐☐
W44OEM-X60003-35T12-C1-340.5☐☐☐☐☐☐☐
W45OEM-X60003-36T12-C1-250.5☐☐☐☐☐☐☐
W46OEM-X60003-37T12-C1-160.5☐☐☐☐☐☐☐
W47OEM-X60003-38T12-C1-150.5☐☐☐☐☐☐☐
W48OEM-X60003-1T12-C2-100.5☐☐☐☐☐☐☐
W49OEM-X60003-19T12-C2-10.5☐☐☐☐☐☐☐
W50OEM-X60004-8T12-C2-50.5☐☐☐☐☐☐☐
W51OEM-X60003-10T12-C2-60.5☐☐☐☐☐☐☐
W52OEM-X60004-13T12-C2-180.5☐☐☐☐☐☐☐
W53OEM-X60003-24T12-C2-70.5☐☐☐☐☐☐☐
W54OEM-X60001-1T12-C1-50.5☐☐☐☐☐☐☐
W55OEM-X60002-23T12-C1-40.5☐☐☐☐☐☐☐
W56OEM-X60004-10T12-C1-30.5☐☐☐☐☐☐☐
W57OEM-X60002-1T12-C3-90.5☐☐☐☐☐☐☐
W58OEM-X60002-13T12-C3-30.5☐☐☐☐☐☐☐
W59OEM-X60002-19T12-C3-220.5☐☐☐☐☐☐☐
W60OEM-X60002-7T12-C3-230.5☐☐☐☐☐☐☐
W61OEM-X60003-40T12-C3-240.5☐☐☐☐☐☐☐
W62OEM-X60003-41T12-C3-250.5☐☐☐☐☐☐☐
W63OEM-X60003-42T12-C3-100.5☐☐☐☐☐☐☐
W64OEM-X60003-45T12-C3-40.5☐☐☐☐☐☐☐
W65OEM-X60003-49T12-C3-280.5☐☐☐☐☐☐☐
W66OEM-X60002-14T12-C2-190.5☐☐☐☐☐☐☐
W67OEM-X60002-15T12-C3-170.5☐☐☐☐☐☐☐
W68OEM-X60002-16T12-C3-180.5☐☐☐☐☐☐☐
W69OEM-X60002-18T12-C2-340.5☐☐☐☐☐☐☐
W70OEM-X60003-22T12-C2-250.5☐☐☐☐☐☐☐
W71OEM-X60003-27T12-C2-170.5☐☐☐☐☐☐☐

Bench test (before first power-up)

Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).

#Probe AProbe BExpectWhyReading
1T12-C1-31T12-C2-21open (OL)+12 V supply must not touch sensor ground
2T12-C3-26T12-C2-21open (OL)+12 V supply must not touch sensor ground
3T12-C1-13T12-C1-31open (OL)power ground must not touch +12 V supply
4T12-C1-13T12-C2-24open (OL)power ground must not touch 5 V sensor reference
5T12-C1-13T12-C3-26open (OL)power ground must not touch +12 V supply
6T12-C1-31T12-C2-24open (OL)+12 V supply must not touch 5 V sensor reference
7T12-C2-21T12-C2-24open (OL)sensor ground must not touch 5 V sensor reference
8T12-C3-26T12-C2-24open (OL)+12 V supply must not touch 5 V sensor reference

If any reading doesn't match, stop and get help before powering up.

Revisions

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Schematic

OEM-X60001OEM-X60002OEM-X60003OEM-X60004OEM-X60005SP-0VSP-14VSP-5V1SP-GNDT12-C1T12-C2T12-C3

Connectors

OEM-X60001

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector/unloader relay control (terminal 15)—W54—0.5T12-C1-5———
4Power ground—W5—0.85SP-GND-1———
5Power ground—W6—0.85SP-GND-1———
6Power ground—W7—0.85SP-GND-1———
7Battery constant (terminal 30)—W4—0.85T12-C3-26———
8ECU main power (terminal 87 via main relay)—W1—0.85SP-14V-1———
9Voltage supply (injector / fuse carrier)—W2—0.85SP-14V-1———

OEM-X60002

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1O2 sensor heater, bank 1 pre-cat—W57—0.5T12-C3-9———
13O2 sensor heater, bank 2 pre-cat—W58—0.5T12-C3-3———
14O2 sensor signal, bank 1 pre-cat—W66—0.5T12-C2-19———
15O2 sensor signal, bank 2 pre-cat—W67—0.5T12-C3-17———
16O2 sensor signal, bank 1 post-cat—W68—0.5T12-C3-18———
18O2 sensor signal, bank 2 post-cat—W69—0.5T12-C2-34———
19O2 sensor heater, bank 2 post-cat—W59—0.5T12-C3-22———
20O2 sensor ground, bank 1 pre-cat—W11—0.5SP-0V-1———
21O2 sensor ground, bank 2 pre-cat—W12—0.5SP-0V-1———
22O2 sensor ground, bank 1 post-cat—W13—0.5SP-0V-1———
23Main relay control—W55—0.5T12-C1-4———
24O2 sensor ground, bank 2 post-cat—W14—0.5SP-0V-1———
7O2 sensor heater, bank 1 post-cat—W60—0.5T12-C3-23———

OEM-X60003

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Mass air flow (MAF) signal—W48—0.5T12-C2-10———
10Throttle position sensor 2—W51—0.5T12-C2-6———
15Exhaust camshaft ground—W15—0.5SP-0V-1———
17MAF ground—W16—0.5SP-0V-1———
18Intake camshaft ground—W17—0.5SP-0V-1———
19Throttle position sensor 1—W49—0.5T12-C2-1———
2Exhaust camshaft position—W32—0.5T12-C2-22———
20Throttle ground—W18—0.5SP-0V-1———
21Crankshaft ground—W19—0.5SP-0V-1———
22Intake air temperature (IAT)—W70—0.5T12-C2-25———
23IAT ground—W20—0.5SP-0V-1———
24Engine coolant temperature (ECT)—W53—0.5T12-C2-7———
25ECT ground—W21—0.5SP-0V-1———
27Engine oil temperature—W71—0.5T12-C2-17———
28Oil temperature ground—W22—0.5SP-0V-1———
29Knock sensor, cylinders 1-3 (A)—W34—0.5T12-C3-31———
30Knock sensor, cylinders 1-3 (B)—W35—0.5T12-C3-32———
31Knock sensor, cylinders 4-6 (A)————————
32Knock sensor, cylinders 4-6 (B)————————
33Injector cylinder 1—W42—0.5T12-C1-9———
34Injector cylinder 2—W43—0.5T12-C1-17———
35Injector cylinder 3—W44—0.5T12-C1-34———
36Injector cylinder 4—W45—0.5T12-C1-25———
37Injector cylinder 5—W46—0.5T12-C1-16———
38Injector cylinder 6—W47—0.5T12-C1-15———
40VANOS intake solenoid—W61—0.5T12-C3-24———
41VANOS exhaust solenoid—W62—0.5T12-C3-25———
42Evap purge valve—W63—0.5T12-C3-10———
43Throttle motor drive 1 (H-bridge)————————
44Throttle motor drive 2 (H-bridge)————————
45Map-controlled thermostat—W64—0.5T12-C3-4———
46Idle speed control, close————————
47Idle speed control, open————————
48Knock sensor shield————————
49DISA intake flap—W65—0.5T12-C3-28———
5Intake camshaft position—W33—0.5T12-C2-29———
7Throttle body +5V supply—W27—0.5SP-5V1-1———
8Crankshaft position—W31—0.5T12-C2-12———

OEM-X60004

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Fuel pump relay control—W56—0.5T12-C1-3———
12Pedal ground 2—W23—0.5SP-0V-1———
13Pedal position signal 2—W52—0.5T12-C2-18———
14Pedal +5V supply 2—W28—0.5SP-5V1-1———
7Pedal ground 1—W24—0.5SP-0V-1———
8Pedal position signal 1—W50—0.5T12-C2-5———
9Pedal +5V supply 1—W29—0.5SP-5V1-1———

OEM-X60005

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil 3—W38—0.5T12-C1-1———
2Ignition coil 2—W37—0.5T12-C1-18———
3Ignition coil 1—W36—0.5T12-C1-10———
5Ignition ground—W8—0.85SP-GND-1———
7Ignition coil 6—W41—0.5T12-C1-27———
8Ignition coil 5—W40—0.5T12-C1-11———
9Ignition coil 4—W39—0.5T12-C1-26———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W11—0.5OEM-X60002-20———
1——W12—0.5OEM-X60002-21———
1——W13—0.5OEM-X60002-22———
1——W14—0.5OEM-X60002-24———
1——W15—0.5OEM-X60003-15———
1——W16—0.5OEM-X60003-17———
1——W17—0.5OEM-X60003-18———
1——W18—0.5OEM-X60003-20———
1——W19—0.5OEM-X60003-21———
1——W20—0.5OEM-X60003-23———
1——W21—0.5OEM-X60003-25———
1——W22—0.5OEM-X60003-28———
1——W23—0.5OEM-X60004-12———
1——W24—0.5OEM-X60004-7———
1——W25—0.5T12-C2-21———
1——W26—0.5T12-C2-33———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-X60001-8———
1——W2—0.85OEM-X60001-9———
1——W3—0.85T12-C1-31———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W27—0.5OEM-X60003-7———
1——W28—0.5OEM-X60004-14———
1——W29—0.5OEM-X60004-9———
1——W30—0.5T12-C2-24———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W5—0.85OEM-X60001-4———
1——W6—0.85OEM-X60001-5———
1——W7—0.85OEM-X60001-6———
1——W8—0.85OEM-X60005-5———
1——W9—0.85T12-C1-13———
1——W10—0.85T12-C1-14———

T12-C1

Mating face
T12-C1-1 · Coil 31T12-C1-2 · Coil 112T12-C1-3 · PWM 33T12-C1-4 · PWM 24T12-C1-5 · PWM 15T12-C1-6 · Motor 1 +6T12-C1-7 · Motor 1 -7T12-C1-8 · Injector 118T12-C1-9 · Injector 19T12-C1-10 · Coil 110T12-C1-11 · Coil 511T12-C1-12 · Coil 712T12-C1-13 · Power Ground 113T12-C1-14 · Power Ground 214T12-C1-15 · Injector 615T12-C1-16 · Injector 516T12-C1-17 · Injector 217T12-C1-18 · Coil 218T12-C1-19 · Coil 819T12-C1-20 · Coil 920T12-C1-21 · Injector 921T12-C1-22 · Injector 1022T12-C1-23 · Injector 823T12-C1-24 · Injector 724T12-C1-25 · Injector 425T12-C1-26 · Coil 426T12-C1-27 · Coil 627T12-C1-28 · Coil 1028T12-C1-29 · Motor 2 +29T12-C1-30 · Motor 2 -30T12-C1-31 · Ignition 12v In31T12-C1-32 · Injector 1232T12-C1-33 · Coil 1233T12-C1-34 · Injector 334
Wire side
T12-C1-1 · Coil 31T12-C1-2 · Coil 112T12-C1-3 · PWM 33T12-C1-4 · PWM 24T12-C1-5 · PWM 15T12-C1-6 · Motor 1 +6T12-C1-7 · Motor 1 -7T12-C1-8 · Injector 118T12-C1-9 · Injector 19T12-C1-10 · Coil 110T12-C1-11 · Coil 511T12-C1-12 · Coil 712T12-C1-13 · Power Ground 113T12-C1-14 · Power Ground 214T12-C1-15 · Injector 615T12-C1-16 · Injector 516T12-C1-17 · Injector 217T12-C1-18 · Coil 218T12-C1-19 · Coil 819T12-C1-20 · Coil 920T12-C1-21 · Injector 921T12-C1-22 · Injector 1022T12-C1-23 · Injector 823T12-C1-24 · Injector 724T12-C1-25 · Injector 425T12-C1-26 · Coil 426T12-C1-27 · Coil 627T12-C1-28 · Coil 1028T12-C1-29 · Motor 2 +29T12-C1-30 · Motor 2 -30T12-C1-31 · Ignition 12v In31T12-C1-32 · Injector 1232T12-C1-33 · Coil 1233T12-C1-34 · Injector 334
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Coil 3—W38—0.5OEM-X60005-1———
2Coil 11————————
3PWM 3—W56—0.5OEM-X60004-10———
4PWM 2—W55—0.5OEM-X60002-23———
5PWM 1—W54—0.5OEM-X60001-1———
6Motor 1 +————————
7Motor 1 -————————
8Injector 11————————
9Injector 1—W42—0.5OEM-X60003-33———
10Coil 1—W36—0.5OEM-X60005-3———
11Coil 5—W40—0.5OEM-X60005-8———
12Coil 7————————
13Power Ground 1—W9—0.85SP-GND-1———
14Power Ground 2—W10—0.85SP-GND-1———
15Injector 6—W47—0.5OEM-X60003-38———
16Injector 5—W46—0.5OEM-X60003-37———
17Injector 2—W43—0.5OEM-X60003-34———
18Coil 2—W37—0.5OEM-X60005-2———
19Coil 8————————
20Coil 9————————
21Injector 9————————
22Injector 10————————
23Injector 8————————
24Injector 7————————
25Injector 4—W45—0.5OEM-X60003-36———
26Coil 4—W39—0.5OEM-X60005-9———
27Coil 6—W41—0.5OEM-X60005-7———
28Coil 10————————
29Motor 2 +————————
30Motor 2 -————————
31Ignition 12v In—W3—0.85SP-14V-1———
32Injector 12————————
33Coil 12————————
34Injector 3—W44—0.5OEM-X60003-35———

T12-C2

Mating face
T12-C2-1 · Analogue 21T12-C2-2 · Wheel 12T12-C2-3 · Analogue 103T12-C2-4 · Digital 14T12-C2-5 · Analogue 35T12-C2-6 · Analogue 46T12-C2-7 · Thermistor 17T12-C2-8 · Digital 28T12-C2-9 · 5v Output9T12-C2-10 · Analogue 110T12-C2-11 · Digital 311T12-C2-12 · Crank12T12-C2-13 · Analogue 1213T12-C2-14 · Digital 414T12-C2-15 · Digital 515T12-C2-16 · Analogue 1116T12-C2-17 · Thermistor 317T12-C2-18 · Analogue 518T12-C2-19 · Analogue 619T12-C2-20 · Wheel 220T12-C2-21 · Sensor Ground21T12-C2-22 · Cam 122T12-C2-23 · Cam 323T12-C2-24 · 5v Output24T12-C2-25 · Thermistor 225T12-C2-26 · CAN High26T12-C2-27 · Digital 627T12-C2-28 · CAN Low28T12-C2-29 · Cam 229T12-C2-30 · Cam 430T12-C2-31 · Wheel 331T12-C2-32 · Wheel 432T12-C2-33 · Sensor Ground33T12-C2-34 · Analogue 934
Wire side
T12-C2-1 · Analogue 21T12-C2-2 · Wheel 12T12-C2-3 · Analogue 103T12-C2-4 · Digital 14T12-C2-5 · Analogue 35T12-C2-6 · Analogue 46T12-C2-7 · Thermistor 17T12-C2-8 · Digital 28T12-C2-9 · 5v Output9T12-C2-10 · Analogue 110T12-C2-11 · Digital 311T12-C2-12 · Crank12T12-C2-13 · Analogue 1213T12-C2-14 · Digital 414T12-C2-15 · Digital 515T12-C2-16 · Analogue 1116T12-C2-17 · Thermistor 317T12-C2-18 · Analogue 518T12-C2-19 · Analogue 619T12-C2-20 · Wheel 220T12-C2-21 · Sensor Ground21T12-C2-22 · Cam 122T12-C2-23 · Cam 323T12-C2-24 · 5v Output24T12-C2-25 · Thermistor 225T12-C2-26 · CAN High26T12-C2-27 · Digital 627T12-C2-28 · CAN Low28T12-C2-29 · Cam 229T12-C2-30 · Cam 430T12-C2-31 · Wheel 331T12-C2-32 · Wheel 432T12-C2-33 · Sensor Ground33T12-C2-34 · Analogue 934
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Analogue 2—W49—0.5OEM-X60003-19———
2Wheel 1————————
3Analogue 10————————
4Digital 1————————
5Analogue 3—W50—0.5OEM-X60004-8———
6Analogue 4—W51—0.5OEM-X60003-10———
7Thermistor 1—W53—0.5OEM-X60003-24———
8Digital 2————————
95v Output————————
10Analogue 1—W48—0.5OEM-X60003-1———
11Digital 3————————
12Crank—W31—0.5OEM-X60003-8———
13Analogue 12————————
14Digital 4————————
15Digital 5————————
16Analogue 11————————
17Thermistor 3—W71—0.5OEM-X60003-27———
18Analogue 5—W52—0.5OEM-X60004-13———
19Analogue 6—W66—0.5OEM-X60002-14———
20Wheel 2————————
21Sensor Ground—W25—0.5SP-0V-1———
22Cam 1—W32—0.5OEM-X60003-2———
23Cam 3————————
245v Output—W30—0.5SP-5V1-1———
25Thermistor 2—W70—0.5OEM-X60003-22———
26CAN High————————
27Digital 6————————
28CAN Low————————
29Cam 2—W33—0.5OEM-X60003-5———
30Cam 4————————
31Wheel 3————————
32Wheel 4————————
33Sensor Ground—W26—0.5SP-0V-1———
34Analogue 9—W69—0.5OEM-X60002-18———

T12-C3

Mating face
T12-C3-1 · Lambda 2 Pump Current1T12-C3-2 · Lambda 2 VGND2T12-C3-3 · Lambda 2 Heater Negative3T12-C3-4 · PWM 94T12-C3-5 · Lambda 2 Trim Resistor5T12-C3-6 · Lambda 2 Nernst Voltage6T12-C3-7 · Lambda 1 Pump Current7T12-C3-8 · Lambda 1 VGND8T12-C3-9 · Lambda 1 Heater Negative9T12-C3-10 · PWM 810T12-C3-11 · Lambda 1 Trim Resistor11T12-C3-12 · Lambda 1 Nernst Voltage12T12-C3-13 · Analogue 1313T12-C3-14 · Analogue 1414T12-C3-15 · Analogue 1515T12-C3-16 · Analogue 1616T12-C3-17 · Analogue 717T12-C3-18 · Analogue 818T12-C3-19 · Digital 719T12-C3-20 · Digital 820T12-C3-21 · Digital 921T12-C3-22 · PWM 422T12-C3-23 · PWM 523T12-C3-24 · PWM 624T12-C3-25 · PWM 725T12-C3-26 · Permanent 12v26T12-C3-27 · Permanent 12v27T12-C3-28 · PWM 1028T12-C3-29 · PWM 1129T12-C3-30 · PWM 1230T12-C3-31 · Knock 131T12-C3-32 · Knock 232T12-C3-33 · CAN 2 High33T12-C3-34 · CAN 2 Low34
Wire side
T12-C3-1 · Lambda 2 Pump Current1T12-C3-2 · Lambda 2 VGND2T12-C3-3 · Lambda 2 Heater Negative3T12-C3-4 · PWM 94T12-C3-5 · Lambda 2 Trim Resistor5T12-C3-6 · Lambda 2 Nernst Voltage6T12-C3-7 · Lambda 1 Pump Current7T12-C3-8 · Lambda 1 VGND8T12-C3-9 · Lambda 1 Heater Negative9T12-C3-10 · PWM 810T12-C3-11 · Lambda 1 Trim Resistor11T12-C3-12 · Lambda 1 Nernst Voltage12T12-C3-13 · Analogue 1313T12-C3-14 · Analogue 1414T12-C3-15 · Analogue 1515T12-C3-16 · Analogue 1616T12-C3-17 · Analogue 717T12-C3-18 · Analogue 818T12-C3-19 · Digital 719T12-C3-20 · Digital 820T12-C3-21 · Digital 921T12-C3-22 · PWM 422T12-C3-23 · PWM 523T12-C3-24 · PWM 624T12-C3-25 · PWM 725T12-C3-26 · Permanent 12v26T12-C3-27 · Permanent 12v27T12-C3-28 · PWM 1028T12-C3-29 · PWM 1129T12-C3-30 · PWM 1230T12-C3-31 · Knock 131T12-C3-32 · Knock 232T12-C3-33 · CAN 2 High33T12-C3-34 · CAN 2 Low34
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Lambda 2 Pump Current————————
2Lambda 2 VGND————————
3Lambda 2 Heater Negative—W58—0.5OEM-X60002-13———
4PWM 9—W64—0.5OEM-X60003-45———
5Lambda 2 Trim Resistor————————
6Lambda 2 Nernst Voltage————————
7Lambda 1 Pump Current————————
8Lambda 1 VGND————————
9Lambda 1 Heater Negative—W57—0.5OEM-X60002-1———
10PWM 8—W63—0.5OEM-X60003-42———
11Lambda 1 Trim Resistor————————
12Lambda 1 Nernst Voltage————————
13Analogue 13————————
14Analogue 14————————
15Analogue 15————————
16Analogue 16————————
17Analogue 7—W67—0.5OEM-X60002-15———
18Analogue 8—W68—0.5OEM-X60002-16———
19Digital 7————————
20Digital 8————————
21Digital 9————————
22PWM 4—W59—0.5OEM-X60002-19———
23PWM 5—W60—0.5OEM-X60002-7———
24PWM 6—W61—0.5OEM-X60003-40———
25PWM 7—W62—0.5OEM-X60003-41———
26Permanent 12v—W4—0.85OEM-X60001-7———
27Permanent 12v————————
28PWM 10—W65—0.5OEM-X60003-49———
29PWM 11————————
30PWM 12————————
31Knock 1—W34—0.5OEM-X60003-29———
32Knock 2—W35—0.5OEM-X60003-30———
33CAN 2 High————————
34CAN 2 Low————————

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-X60001-1Injector/unloader relay control (terminal 15)low_side_outT12-C1-5PWM 1low_side_outcorroborated
OEM-X60001-4Power groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60001-5Power groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60001-6Power groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60001-7Battery constant (terminal 30)power_inT12-C3-26Permanent 12vpower_incorroborated
OEM-X60001-8ECU main power (terminal 87 via main relay)power_inT12-C1-31Ignition 12v Inpower_incorroborated
OEM-X60001-9Voltage supply (injector / fuse carrier)power_inT12-C1-31Ignition 12v Inpower_incorroborated
OEM-X60002-1O2 sensor heater, bank 1 pre-catlow_side_outT12-C3-9Lambda 1 Heater Negativelow_side_outcorroborated
OEM-X60002-13O2 sensor heater, bank 2 pre-catlow_side_outT12-C3-3Lambda 2 Heater Negativelow_side_outcorroborated
OEM-X60002-14O2 sensor signal, bank 1 pre-catlambda_nb_inT12-C2-19Analogue 6analog_incorroborated
OEM-X60002-15O2 sensor signal, bank 2 pre-catlambda_nb_inT12-C3-17Analogue 7analog_incorroborated
OEM-X60002-16O2 sensor signal, bank 1 post-catlambda_nb_inT12-C3-18Analogue 8analog_incorroborated
OEM-X60002-18O2 sensor signal, bank 2 post-catlambda_nb_inT12-C2-34Analogue 9analog_incorroborated
OEM-X60002-19O2 sensor heater, bank 2 post-catlow_side_outT12-C3-22PWM 4low_side_outcorroborated
OEM-X60002-20O2 sensor ground, bank 1 pre-catsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60002-21O2 sensor ground, bank 2 pre-catsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60002-22O2 sensor ground, bank 1 post-catsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60002-23Main relay controllow_side_outT12-C1-4PWM 2low_side_outcorroborated
OEM-X60002-24O2 sensor ground, bank 2 post-catsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60002-7O2 sensor heater, bank 1 post-catlow_side_outT12-C3-23PWM 5low_side_outcorroborated
OEM-X60003-1Mass air flow (MAF) signalanalog_inT12-C2-10Analogue 1analog_incorroborated
OEM-X60003-10Throttle position sensor 2analog_inT12-C2-6Analogue 4analog_incorroborated
OEM-X60003-15Exhaust camshaft groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-17MAF groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-18Intake camshaft groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-19Throttle position sensor 1analog_inT12-C2-1Analogue 2analog_incorroborated
OEM-X60003-2Exhaust camshaft positiontrigger_inT12-C2-22Cam 1trigger_incorroborated
OEM-X60003-20Throttle groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-21Crankshaft groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-22Intake air temperature (IAT)temp_inT12-C2-25Thermistor 2temp_incorroborated
OEM-X60003-23IAT groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-24Engine coolant temperature (ECT)temp_inT12-C2-7Thermistor 1temp_incorroborated
OEM-X60003-25ECT groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-27Engine oil temperaturetemp_inT12-C2-17Thermistor 3temp_incorroborated
OEM-X60003-28Oil temperature groundsensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60003-29Knock sensor, cylinders 1-3 (A)knock_inT12-C3-31Knock 1knock_incorroborated
OEM-X60003-30Knock sensor, cylinders 1-3 (B)knock_inT12-C3-32Knock 2knock_incorroborated
OEM-X60003-31Knock sensor, cylinders 4-6 (A)knock_in———corroborated
OEM-X60003-32Knock sensor, cylinders 4-6 (B)knock_in———corroborated
OEM-X60003-33Injector cylinder 1injector_outT12-C1-9Injector 1injector_outcorroborated
OEM-X60003-34Injector cylinder 2injector_outT12-C1-17Injector 2injector_outcorroborated
OEM-X60003-35Injector cylinder 3injector_outT12-C1-34Injector 3injector_outcorroborated
OEM-X60003-36Injector cylinder 4injector_outT12-C1-25Injector 4injector_outcorroborated
OEM-X60003-37Injector cylinder 5injector_outT12-C1-16Injector 5injector_outcorroborated
OEM-X60003-38Injector cylinder 6injector_outT12-C1-15Injector 6injector_outcorroborated
OEM-X60003-40VANOS intake solenoidlow_side_outT12-C3-24PWM 6low_side_outcorroborated
OEM-X60003-41VANOS exhaust solenoidlow_side_outT12-C3-25PWM 7low_side_outcorroborated
OEM-X60003-42Evap purge valvelow_side_outT12-C3-10PWM 8low_side_outcorroborated
OEM-X60003-43Throttle motor drive 1 (H-bridge)hbridge_out———corroborated
OEM-X60003-44Throttle motor drive 2 (H-bridge)hbridge_out———corroborated
OEM-X60003-45Map-controlled thermostatlow_side_outT12-C3-4PWM 9low_side_outcorroborated
OEM-X60003-46Idle speed control, closehbridge_out———corroborated
OEM-X60003-47Idle speed control, openhbridge_out———corroborated
OEM-X60003-48Knock sensor shieldshield———corroborated
OEM-X60003-49DISA intake flaplow_side_outT12-C3-28PWM 10low_side_outcorroborated
OEM-X60003-5Intake camshaft positiontrigger_inT12-C2-29Cam 2trigger_incorroborated
OEM-X60003-7Throttle body +5V supplyvrefT12-C2-245v Outputvrefcorroborated
OEM-X60003-8Crankshaft positiontrigger_inT12-C2-12Cranktrigger_incorroborated
OEM-X60004-10Fuel pump relay controllow_side_outT12-C1-3PWM 3low_side_outcorroborated
OEM-X60004-12Pedal ground 2sensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60004-13Pedal position signal 2analog_inT12-C2-18Analogue 5analog_incorroborated
OEM-X60004-14Pedal +5V supply 2vrefT12-C2-245v Outputvrefcorroborated
OEM-X60004-7Pedal ground 1sensor_groundT12-C2-21 + T12-C2-33Sensor Ground + Sensor Groundsensor_groundcorroborated
OEM-X60004-8Pedal position signal 1analog_inT12-C2-5Analogue 3analog_incorroborated
OEM-X60004-9Pedal +5V supply 1vrefT12-C2-245v Outputvrefcorroborated
OEM-X60005-1Ignition coil 3ignition_outT12-C1-1Coil 3ignition_outcorroborated
OEM-X60005-2Ignition coil 2ignition_outT12-C1-18Coil 2ignition_outcorroborated
OEM-X60005-3Ignition coil 1ignition_outT12-C1-10Coil 1ignition_outcorroborated
OEM-X60005-5Ignition groundgroundT12-C1-13 + T12-C1-14Power Ground 1 + Power Ground 2groundcorroborated
OEM-X60005-7Ignition coil 6ignition_outT12-C1-27Coil 6ignition_outcorroborated
OEM-X60005-8Ignition coil 5ignition_outT12-C1-11Coil 5ignition_outcorroborated
OEM-X60005-9Ignition coil 4ignition_outT12-C1-26Coil 4ignition_outcorroborated

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-X60001-8SP-14V-10.85no routeECU main power (terminal 87 via main relay)—
W2OEM-X60001-9SP-14V-10.85no routeVoltage supply (injector / fuse carrier)—
W3SP-14V-1T12-C1-310.85no routeIgnition 12v In—
W4OEM-X60001-7T12-C3-260.85no routeBattery constant (terminal 30)—
W5OEM-X60001-4SP-GND-10.85no routePower ground—
W6OEM-X60001-5SP-GND-10.85no routePower ground—
W7OEM-X60001-6SP-GND-10.85no routePower ground—
W8OEM-X60005-5SP-GND-10.85no routeIgnition ground—
W9SP-GND-1T12-C1-130.85no routePower Ground 1—
W10SP-GND-1T12-C1-140.85no routePower Ground 2—
W11OEM-X60002-20SP-0V-10.5no routeO2 sensor ground, bank 1 pre-cat—
W12OEM-X60002-21SP-0V-10.5no routeO2 sensor ground, bank 2 pre-cat—
W13OEM-X60002-22SP-0V-10.5no routeO2 sensor ground, bank 1 post-cat—
W14OEM-X60002-24SP-0V-10.5no routeO2 sensor ground, bank 2 post-cat—
W15OEM-X60003-15SP-0V-10.5no routeExhaust camshaft ground—
W16OEM-X60003-17SP-0V-10.5no routeMAF ground—
W17OEM-X60003-18SP-0V-10.5no routeIntake camshaft ground—
W18OEM-X60003-20SP-0V-10.5no routeThrottle ground—
W19OEM-X60003-21SP-0V-10.5no routeCrankshaft ground—
W20OEM-X60003-23SP-0V-10.5no routeIAT ground—
W21OEM-X60003-25SP-0V-10.5no routeECT ground—
W22OEM-X60003-28SP-0V-10.5no routeOil temperature ground—
W23OEM-X60004-12SP-0V-10.5no routePedal ground 2—
W24OEM-X60004-7SP-0V-10.5no routePedal ground 1—
W25SP-0V-1T12-C2-210.5no routeSensor Ground—
W26SP-0V-1T12-C2-330.5no routeSensor Ground—
W27OEM-X60003-7SP-5V1-10.5no routeThrottle body +5V supply—
W28OEM-X60004-14SP-5V1-10.5no routePedal +5V supply 2—
W29OEM-X60004-9SP-5V1-10.5no routePedal +5V supply 1—
W30SP-5V1-1T12-C2-240.5no route5v Output—
W31OEM-X60003-8T12-C2-120.5no routeCrankshaft position—
W32OEM-X60003-2T12-C2-220.5no routeExhaust camshaft position—
W33OEM-X60003-5T12-C2-290.5no routeIntake camshaft position—
W34OEM-X60003-29T12-C3-310.5no routeKnock sensor, cylinders 1-3 (A)—
W35OEM-X60003-30T12-C3-320.5no routeKnock sensor, cylinders 1-3 (B)—
W36OEM-X60005-3T12-C1-100.5no routeIgnition coil 1—
W37OEM-X60005-2T12-C1-180.5no routeIgnition coil 2—
W38OEM-X60005-1T12-C1-10.5no routeIgnition coil 3—
W39OEM-X60005-9T12-C1-260.5no routeIgnition coil 4—
W40OEM-X60005-8T12-C1-110.5no routeIgnition coil 5—
W41OEM-X60005-7T12-C1-270.5no routeIgnition coil 6—
W42OEM-X60003-33T12-C1-90.5no routeInjector cylinder 1—
W43OEM-X60003-34T12-C1-170.5no routeInjector cylinder 2—
W44OEM-X60003-35T12-C1-340.5no routeInjector cylinder 3—
W45OEM-X60003-36T12-C1-250.5no routeInjector cylinder 4—
W46OEM-X60003-37T12-C1-160.5no routeInjector cylinder 5—
W47OEM-X60003-38T12-C1-150.5no routeInjector cylinder 6—
W48OEM-X60003-1T12-C2-100.5no routeMass air flow (MAF) signal—
W49OEM-X60003-19T12-C2-10.5no routeThrottle position sensor 1—
W50OEM-X60004-8T12-C2-50.5no routePedal position signal 1—
W51OEM-X60003-10T12-C2-60.5no routeThrottle position sensor 2—
W52OEM-X60004-13T12-C2-180.5no routePedal position signal 2—
W53OEM-X60003-24T12-C2-70.5no routeEngine coolant temperature (ECT)—
W54OEM-X60001-1T12-C1-50.5no routeInjector/unloader relay control (terminal 15)—
W55OEM-X60002-23T12-C1-40.5no routeMain relay control—
W56OEM-X60004-10T12-C1-30.5no routeFuel pump relay control—
W57OEM-X60002-1T12-C3-90.5no routeO2 sensor heater, bank 1 pre-cat—
W58OEM-X60002-13T12-C3-30.5no routeO2 sensor heater, bank 2 pre-cat—
W59OEM-X60002-19T12-C3-220.5no routeO2 sensor heater, bank 2 post-cat—
W60OEM-X60002-7T12-C3-230.5no routeO2 sensor heater, bank 1 post-cat—
W61OEM-X60003-40T12-C3-240.5no routeVANOS intake solenoid—
W62OEM-X60003-41T12-C3-250.5no routeVANOS exhaust solenoid—
W63OEM-X60003-42T12-C3-100.5no routeEvap purge valve—
W64OEM-X60003-45T12-C3-40.5no routeMap-controlled thermostat—
W65OEM-X60003-49T12-C3-280.5no routeDISA intake flap—
W66OEM-X60002-14T12-C2-190.5no routeO2 sensor signal, bank 1 pre-cat—
W67OEM-X60002-15T12-C3-170.5no routeO2 sensor signal, bank 2 pre-cat—
W68OEM-X60002-16T12-C3-180.5no routeO2 sensor signal, bank 1 post-cat—
W69OEM-X60002-18T12-C2-340.5no routeO2 sensor signal, bank 2 post-cat—
W70OEM-X60003-22T12-C2-250.5no routeIntake air temperature (IAT)—
W71OEM-X60003-27T12-C2-170.5no routeEngine oil temperature—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 13.000ea
connectorBMW-E46-MS43-CONNBMWE46 DME (MS43) harness connector1.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)48.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (4)

SeverityCodeSubjectMessage
errorPHYS_REQUIRED_OPENT12-C3-27T12-C3-27 "Permanent 12v" is required but not wired.
errorREQUIRED_UNMAPPEDOEM-X60003-43Required OEM function "Throttle motor drive 1 (H-bridge)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-X60003-44Required OEM function "Throttle motor drive 2 (H-bridge)" (hbridge_out) is not connected to the new ECU.
infoUNMAPPEDOEM5 optional OEM pins are not mapped: OEM-X60003-31 Knock sensor, cylinders 4-6 (A); OEM-X60003-32 Knock sensor, cylinders 4-6 (B); OEM-X60003-46 Idle speed control, close; OEM-X60003-47 Idle speed control, open; OEM-X60003-48 Knock sensor shield

Accepted (0)

CodeSubjectReasonBy

Notes

Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-X60003 43: Throttle motor drive 1 (H-bridge): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-X60003 44: Throttle motor drive 2 (H-bridge): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - T12-C3 27: Permanent 12v: required by DTAFast T12 but no stock pin feeds it; wire by hand Not wired: - OEM-X60003 31: Knock sensor, cylinders 4-6 (A): no free knock input on DTAFast T12 - OEM-X60003 32: Knock sensor, cylinders 4-6 (B): no free knock input on DTAFast T12 - OEM-X60003 48: Knock sensor shield: no shield pin on DTAFast T12 - OEM-X60003 46: Idle speed control, close: no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-X60003 47: Idle speed control, open: no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docDTAFast T12+ ECU wiring diagram (served for T12 and T12+)https://cdn.shopify.com/s/files/1/0848/7508/4108/files/T12PLUS_Wiring-Diagram.pdf?v=1728572014———
2community_copyms4x.net: Siemens MS43 Pinouthttps://www.ms4x.net/index.php?title=Siemens_MS43_Pinout———
2community_copyrusefi wiki: 2002 BMW 325 / 2004 BMW 330Ci E46 DME pinout (M54/MS43)https://github.com/rusefi/rusefi/wiki/2002-BMW-325-and-2004-BMW-330Ci-E46-DME-pinout———